.slideshow {
    position: relative;
    margin: 0 auto;
    width: 400px;
    height: 250px;
    overflow: hidden;
}

.slideshow img {
    display: none;
    width: 100%;
    height: auto;
}

.slideshow img.first {
    display: block;
}

.slide-selector {
    position: relative;
    margin: 0 auto;
    border: 1px solid black;
}

.slide-selector li {
    display: inline-block;
    list-style: none;
    padding: 4px 10px;
}